Regulations Governing the Discharge of Oil, Wastewater or Sewage Into the Sea From Maritime Projects Article 2

Those who engage in maritime projects shall not discharge oil or waste water or sewage into the sea. However, if the discharge of oil or waste water or sewage meets the standards for discharge of water via the sea discharge pipeline and does not pose a risk of lowering the marine environment categories, and if an application has been made to the central competent authority to obtain the permission for the discharge, then the discharge shall be exempted from this restriction; If a discharge is permitted, it shall be made in accordance with the contents of the permit.
中文原文 海域工程排放油廢(污)水許可辦法第2條
從事海域工程不得排放油、廢(污)水於海洋。
但其排放油、廢(污)水符合海洋放流管線放流水標準且無降低海域環境分類之虞,經向中央主管機關申請取得排放許可文件者,不在此限;其經許可者,應依許可內容排放。

English translation for reference only; the Chinese text prevails. Not legal advice.